feat(frontend): Transform layout to use shadcn dashboard-01 with iOS PWA safe area support.

- Replace custom layout with modern SidebarProvider/SidebarInset structure
- Add AppSidebar component using shadcn patterns with preserved account summary
- Add SiteHeader component with SidebarTrigger integration
- Install shadcn sidebar, separator, and related UI components
- Fix iOS PWA safe area issues - sidebar no longer overlaps dynamic island/notch
- Add pt-safe-top and pl-safe-left classes to sidebar and header components
- Remove legacy Sidebar.tsx and Header.tsx components
- Preserve all existing functionality: navigation, API health status, theme toggle, PWA features
- Improve mobile responsive behavior with built-in shadcn drawer patterns

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/components/ui/sheet.tsx

@@ -1,17 +1,19 @@
-import * as React from "react";
-import * as SheetPrimitive from "@radix-ui/react-dialog";
-import { cva, type VariantProps } from "class-variance-authority";
-import { X } from "lucide-react";
+"use client"
 
-import { cn } from "@/lib/utils";
+import * as React from "react"
+import * as SheetPrimitive from "@radix-ui/react-dialog"
+import { cva, type VariantProps } from "class-variance-authority"
+import { X } from "lucide-react"
 
-const Sheet = SheetPrimitive.Root;
+import { cn } from "@/lib/utils"
 
-const SheetTrigger = SheetPrimitive.Trigger;
+const Sheet = SheetPrimitive.Root
 
-const SheetClose = SheetPrimitive.Close;
+const SheetTrigger = SheetPrimitive.Trigger
 
-const SheetPortal = SheetPrimitive.Portal;
+const SheetClose = SheetPrimitive.Close
+
+const SheetPortal = SheetPrimitive.Portal
 
 const SheetOverlay = React.forwardRef<
   React.ElementRef<typeof SheetPrimitive.Overlay>,
@@ -20,16 +22,16 @@ const SheetOverlay = React.forwardRef<
   <SheetPrimitive.Overlay
     className={cn(
       "fixed inset-0 z-50 bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
-      className,
+      className
     )}
     {...props}
     ref={ref}
   />
-));
-SheetOverlay.displayName = SheetPrimitive.Overlay.displayName;
+))
+SheetOverlay.displayName = SheetPrimitive.Overlay.displayName
 
 const sheetVariants = cva(
-  "fixed z-50 gap-4 bg-background p-6 shadow-lg transition ease-in-out data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:duration-300 data-[state=open]:duration-500",
+  "fixed z-50 gap-4 bg-background p-6 shadow-lg transition ease-in-out data-[state=closed]:duration-300 data-[state=open]:duration-500 data-[state=open]:animate-in data-[state=closed]:animate-out",
   {
     variants: {
       side: {
@@ -38,14 +40,14 @@ const sheetVariants = cva(
           "inset-x-0 bottom-0 border-t data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom",
         left: "inset-y-0 left-0 h-full w-3/4 border-r data-[state=closed]:slide-out-to-left data-[state=open]:slide-in-from-left sm:max-w-sm",
         right:
-          "inset-y-0 right-0 h-full w-3/4  border-l data-[state=closed]:slide-out-to-right data-[state=open]:slide-in-from-right sm:max-w-sm",
+          "inset-y-0 right-0 h-full w-3/4 border-l data-[state=closed]:slide-out-to-right data-[state=open]:slide-in-from-right sm:max-w-sm",
       },
     },
     defaultVariants: {
       side: "right",
     },
-  },
-);
+  }
+)
 
 interface SheetContentProps
   extends React.ComponentPropsWithoutRef<typeof SheetPrimitive.Content>,
@@ -62,15 +64,15 @@ const SheetContent = React.forwardRef<
       className={cn(sheetVariants({ side }), className)}
       {...props}
     >
-      {children}
       <SheetPrimitive.Close className="absolute right-4 top-4 rounded-sm opacity-70 ring-offset-background transition-opacity hover:opacity-100 focus:outline-none focus:ring-2 focus:ring-ring focus:ring-offset-2 disabled:pointer-events-none data-[state=open]:bg-secondary">
         <X className="h-4 w-4" />
         <span className="sr-only">Close</span>
       </SheetPrimitive.Close>
+      {children}
     </SheetPrimitive.Content>
   </SheetPortal>
-));
-SheetContent.displayName = SheetPrimitive.Content.displayName;
+))
+SheetContent.displayName = SheetPrimitive.Content.displayName
 
 const SheetHeader = ({
   className,
@@ -79,12 +81,12 @@ const SheetHeader = ({
   <div
     className={cn(
       "flex flex-col space-y-2 text-center sm:text-left",
-      className,
+      className
     )}
     {...props}
   />
-);
-SheetHeader.displayName = "SheetHeader";
+)
+SheetHeader.displayName = "SheetHeader"
 
 const SheetFooter = ({
   className,
@@ -93,12 +95,12 @@ const SheetFooter = ({
   <div
     className={cn(
       "flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
-      className,
+      className
     )}
     {...props}
   />
-);
-SheetFooter.displayName = "SheetFooter";
+)
+SheetFooter.displayName = "SheetFooter"
 
 const SheetTitle = React.forwardRef<
   React.ElementRef<typeof SheetPrimitive.Title>,
@@ -109,8 +111,8 @@ const SheetTitle = React.forwardRef<
     className={cn("text-lg font-semibold text-foreground", className)}
     {...props}
   />
-));
-SheetTitle.displayName = SheetPrimitive.Title.displayName;
+))
+SheetTitle.displayName = SheetPrimitive.Title.displayName
 
 const SheetDescription = React.forwardRef<
   React.ElementRef<typeof SheetPrimitive.Description>,
@@ -121,8 +123,8 @@ const SheetDescription = React.forwardRef<
     className={cn("text-sm text-muted-foreground", className)}
     {...props}
   />
-));
-SheetDescription.displayName = SheetPrimitive.Description.displayName;
+))
+SheetDescription.displayName = SheetPrimitive.Description.displayName
 
 export {
   Sheet,
@@ -135,4 +137,4 @@ export {
   SheetFooter,
   SheetTitle,
   SheetDescription,
-};
+}